An evaluation of the breeding strategies used in the development of the Dorper sheep and the improved Boer goat of South Africa
نویسنده
چکیده
ICAR Technical Series No 3 The development of the Dorper sheep and the Improved Boer Goat are undoubtedly two of the most successful long-term livestock programmes in South Africa. The Dorper is a composite mutton sheep breed developed through crossing an indigenous breed with a British mutton breed and the Improved Boer Goat was developed using a breeding strategy based largely on selection for fertility and meat production.
منابع مشابه
The history of the Dorper sheep.
This short history of the Dorper sheep traces its background and the steps taken to develop that breed in South Africa. The most important traits considered for the developing of the Dorper are listed and the breeding system outlined. The development of the White Dorper is also detailed and the breed improvement programs are indicated.
متن کاملEvaluation of Growth Performance of Local and Dorper × Local Crossbred Sheep in Eastern Amhara Region, Ethiopia
The present study was performed to evaluate the on-station growth performance of local and Dorper × local crossbred sheep in eastern Amhara region, Ethiopia. Data on 302 lambs collected over a 4-year period (2009 to 2012) on local and Dorper × local crossbred sheep at Sirinka breeding, evaluation and distribution site were used in this study. Fixed effects considered were breed, lamb sex, birth...
متن کاملHost preference of the sheep scab mite, Psoroptes ovis.
Sheep scab mites, Psoroptes ovis, collected from a Merino donor sheep, were used to infest Merino and Dorper sheep, and Angora and Boer goats. Mites were placed on the sheep on 1 or 2 occasions and on 5 occasions on the goats. All the animals were examined at regular intervals for the presence of scab lesions and living mites. Both sheep breeds developed lesions, but those on the Merino sheep w...
متن کاملThe development of the Dorper, its nutrition and a perspective of the grazing ruminant on veld.
The development of the non-woolled Dorper sheep breed is briefly reviewed. Despite the large number of Dorpers in South Africa, precious little research results have been published on its nutrition under harsh, arid grazing conditions, especially since this has been an objective for creating and developing the breed. Results from the limited number of trials with free ranging Dorpers on natural...
متن کاملTranshumant Sheep and Goat Farming Sector in Greece
Transhumance is an extensive farming system developed by livestock farmers, that moved their herds between lowlands and uplands, in order to cope with the seasonality of the available forage. The purpose of this study was to examine the transhumant sheep and goat system in Greece highlighting differences in management aspects among the country’s regions. Non-parametric statistical methods in a ...
متن کامل